Draft-rigging for railway-cars.



G. JOHNSON DRAFT RIGGING PORRAILWMZ GARS. y

APPLIGAflIONIILED OCT. 9, 1913. L l 22,9%@ Patented Dee. 29, 19M

IN VE N TOR. fyi@ nsw? gaaf" BY ATTORN Y To all whom t may concern.'

'entran si-raras ravrmrr cierren.

GEORGE A. JOHNSON, .0F CHICAGO, ILLINOIS, -ASSIG-NOR T WILLIAM MINER, 0F

` CHICAGO, ILLINOIS. v

DRAFTjRIGGIN'G FOR RAILWAY-CARS.

Specification of Letters Patent.

Patenten nee. ee, reta.

Application filled October 9, 19173. Serial 1\T o. 794,198.

Beit known that I, Gnoncn A. JOHNSON, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented a certain new andl useful Improvement in Draft-Rigging for Railway-Cars, of which the following is a full, clear, concise, and exact description, reference being had to the accompanying drawings, forming apart of this specification.

My invention relates to improvements in draft rigging for railway cars.

The object of my invention is to provide a draft gear having a preliminary spring, and in which the preliminary spring operates independently of the main springs and other cushioning devices of the gear.

Referring to the drawings the numeral 6 represents a shell, preferably cylindrical in shape or circular in cross section,open at its forward end and-provided near its rear end' with a preferably integral transverse partition 7. Within the shell in front of the s aid partition is disposed the friction mechanism 8, consisting of the friction shoes 9, which are, preferably threefinnumber, the wedge l0, and the anti-frictinrollsll. Each of the friction shoes is provided 'with a friction `face 12, engaging theinnerfriction face 13, ofthe shell a .wedgingface 14. 'The wedge 10, is'p'referably pyramidal form and has wedging faces, 15, equaling 1n number the frictionshoes. Between each wedging face of the wedge and the adjacent `wedgiug face of a friction shoe is disposed one of the antiefriction rolls 'l1'. The wedge 10, is forwardly provided with a recess 16, to receive the nut 17. of the connecting rod 18, which passes through the perforation 19, with which the wedge is provided, and through the transverse wall 7, of the'shell 6.'

4Between the walls 7, of the friction shell and the friction mechanism is mounted the main springs 20, comprising preferably an outer spring 21, seated at its forward end against the rear ends of the friction shoes, and the inner spring 22, forwardly seated in preferable construction against the internal shoulders 23, with which the friction shoes are provided.

The preliminary spring .24, preferably comprises an outer spring 25, and an inner spring 2G, nested within the spring 25. The said springs are forwardly seated against the rear face 27, of thetransverse wall 7, of the shell, and rearwardly seated against the inner face 28, Aof the preliminary follower 29. The preliminary follower 29, consists preferably of a transverse plate 30, forwardly provided with a peripheral collar 31, adapted to reciprocate within the rear portion 32, 'of the friction shell, and provided with a shoulder 33, adapted to engage the rear endv 34', of the friction shell, and limit the inward movement of the preliminary follower.V The preliminary follower 'is also centrally provided with a forwardly 'extended boss 35, around which the preliminary springs are seated., Within the boss is provided a recess 36, within which the head 3.7, of the connecting rod isvreceived.

The forward end of the boss 35, of the preliminary follower, and the transverse wall 7, of the shellv G, are provided with central registering perforations to receive a locking device 38, comprising a plurality, preferably three segmental members 39, arranged about the connecting rod 18. Each of said members 39, is lprovided with a forward shoulder f1.0, an"intermediate shoulder l1, and a rearshoulder 42, forming when the said members areilr assembled position three annular shoulders about the connecting rod, with theannular groove 43, between the front shoulders 40, and intermediate shoulders 41, and the annular groove 14, betweenthe intermediate shoulders Ll1 and the rear shoulders42. The perforation in the transverse wall 7, of the shell is designated the parts are assembled, the forward faces 11o el?, of the `rear shoulders 42, of the looking device 38, engage' against the inwardly turned annular-"shoulder 47, surrounding the perforation 48, in the forward end iof the boss with which the preliminary follower isprovided. The head 3,7, of the oon-l lnecting rod engages against the rear face rear shoulder 42, of the lo'clring'j 49, of the 'de/vices. t.

and 4,1 engage onv opposite sidesof the Wall n preventing increment of the locking device ra shell,'a`nd that""thereupon the parts of thel zell the vconnecting rod Whichjwill prevent the As Will be `unlerstood, when the parts are assembled as shown in Fig.- 1, shoulders/l0 -7 surrounding-,the opening 45 therein, thus longitudinally relatively to the s hell.

y It-wrill be "clear that the preliminary Springs, "place and preliminary follower 'may be in'positiontfat the 'rear' end vof the .locking device' 88, lIiaay,be'inserted one atI-a i'me, and .that tliefslmeflnay be secured' 1n f heir assembled positionfby the insertion of collapsing of thefmember's thereof, and that bymeans of the "device described, the preliminary spring may be placed under slioh initial compression asmay be desired, and that the. compression resisting power of the same may bepredetermined and fixedA in relation to the action ofthe other parts of the gear. It will also be clear that the pre- -liminary springoperates independently of 4the main springs land of the friction mecha- Claims: v 1. Ina draft gear for railway cars, in

.,combination, a shell, hfriction mechanismr and springs Within the shell, a 1,')reliminaryvy follower, preliminary :springs l seated.V between said follower andthe shell, a 'locking dev-ice engagingthe preliminary follower to the'shell, said ,lockingV device' co prisi'r y l1-plurality Ofsegmental members adapt to rigidly engage the shell at onel end, and1t0 slidingly engage the ,preliminary followeriat 2;' In a draft gear for, `railwayCv ,f Shen,v mummy, Sp1-ings, ,and ,a `'pretirfa-'- nary olloWer,- neombination with'y'a p1 v rality of segmentzillnembers havingslinilg-y ders to engagethefshell at' one end flidjfthe i;)relimixiary.tfollwer'lat theV other l means to maintain ,segmental members in i loekedposition with thefsh'ell andflinfenl gagement with the preli inar follower..

3. In a draft gear fo ra way"ears, a shell having a transverse l partition 'i'.h ex 'e1n,l t al,prelirmnary spring seated agaihstgsai-d- M partition, a vpreliminary followengaging the preliminary spring, a locking device comprising segmental y-Inernbers haivii'gannul-ar grooves, the said partition being received in one of said' grooves, and tleprelilninary-follower slidingly engag'lngwith- 

